/* gsl_hessian.h
 * 
 * Copyright (C) 2000 Cesar Enrique Garcia Dabo
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef __GSL_HESSIAN_H__
#define __GSL_HESSIAN_H__

#include <gsl/gsl_math.h>
#include <gsl/gsl_multimin.h>

#undef __BEGIN_DECLS
#undef __END_DECLS
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS /* empty */
# define __END_DECLS /* empty */
#endif

/* __BEGIN_DECLS */

int
gsl_hessian_central (const gsl_multimin_function * f,
                         const gsl_vector *x, double h,
                         gsl_matrix *H);

/* __END_DECLS */

#endif /* __GSL_DERIV_H__ */
